william barry



(N 0 Model.)

W. BARRY.

ROOF.-

- Patented Sept. 27, 1 881 UNITED! STATES PATENT OFFICE.

WILLIAM BARRY, OF NEW HAVEN, CONNECTICUT.

ROOF.

SPECIFICATION forming part of Letters Patent No. 247,596, datedSeptember 27, 1881.

Application filed March 23, 1881.

To all whom it may concern Be it known that I, WILLIAM BARRY, of

New Haven, in the county of New Haven and IO ing the side inclinedstones or material of the roof, near their upper ends, each with twoinclined grooves meeting attheir lower pointsof inclination about midwaythe width of the stone or material, and having thereat an out- 1 5 let,all arranged under theridge stone or piece,

substantially ashereinafter more t'ullysetforth 151d claimed.

In the accompanyingdrawings, Figure I is a perspective view, showing myimprovement 20 at the right of thejoint, and Figs. 2, 3, 4, and

5 are details and a section of the joint.

To enable others skilled in the art to which my improvement appertainsto make and use the same, I will describe it.

A indicates a stone formingapart of the roof of a vault. One-half of itsoverlapping parta is cut away in such a manner that the overlappingsurface is inclined, and so that the cut surfaces form an acute angle.In the inclined overlapping part the groove 00 is cut.

B represents another stone forming a part of the roof, and has one halfof its overlapping part I) cut away in such a manner that theoverlapping surface is inclined, and so that the cut surfaces make anacute angle. These overlapping parts 06 and I) fit together, andthesurfaces of the stones form an even surface. In the upper part of thestones are out the (No model.)

grooves m it. Two of these grooves are made in each stone and inclineddownward,meeting at their lower points of inclination about midway thewidth of the stone, where they are provided with an outlet, as at m, fordraining OK the water received into the grooves or gutters m n, drippinginto the latter between the joints of the ridge piece or pieces.

A groove, 0, uniting theinclined grooves or gutters at a point abovetheir conjunction, may

be provided for aiding drainage, if desired; but it is not essential.

The stones C, Figs. 1 and 2, form the ridge of the vault, fit on thestones formingthe sides of the roof, and are united by joints made afterthe {orm of joint uniting the inclined side pieces. The aforesaid formof joint is old, its function, as is well understood, being to drain anywater passing down between the stones into the acute angles, which willrun it ofl, and to carry ofi' by the grooves a any water rising bycapillary attraction or driven up by the wind. I therefore lay no claimto such construction.

I claim and desire to secure by Letters Patent- In a root, the inclinedside stones or pieces having near their upper ends and under the ridgestone or piece each two inclined grooves or gutters, m a, meeting attheir lower "points of inclination and provided thereat with an outlet,m, substantially as and for the purpose set fort-h.

WILLIAM BARRY.

Witnesses:

DANIEL S. GLENNEY, Jr.,

GEORGE TERRY.

